IAAF investigates letter alleging doping in Chinese athletics

The body that governs world athletics has said it is investigating a letter alleging historic state-backed doping in the sport in China.

The previously unseen letter was apparently written by Chinese Olympic medallist Wang Junxia in 1995, but only published in state media this week.

Wang still holds two world records.

Read more at: http://www.bbc.com/news/world-asia-china-35499442